How do we know social cognition exists? Let's say you're with a group of colleagues after you just learned your boss resigned. By reading your coworkers body language and listening to what they have to say, you know how each of them feels about the situation. Or do you? Social cognition plays a role in how our brains interpret what is happening in social interaction around us. Rebecca Saxe, Carole Middleton Career Development Professor in the department of brain and cognitive sciences at MIT, explains social cognition in greater detail.